I have long hoped that someone else would take up that idea and run with it! Whether or not they got the idea from us (and I hope they did get it from us, that would be awesome), I'm glad to see this. It's kind of like that old adage about how first person shooters were once called "doom-likes." I was always hoping that the AI War model might be the start of a larger subgenre, and maybe this is the start. We'll see!
I knew a number of folks over a Stardock back before Gamestop bought Impulse, and they're good folks. AI War sold REALLY well on their store, too, so I wouldn't be surprised if they noticed it.
To be clear, there's absolutely nothing wrong with what they're doing, and I couldn't be delighted. Hopefully you are not offended when I say that AI War was heavily inspired by Supreme Commander (with the camera, the looping build queues, etc). And Tidalis had a lot of inspiration from Tetris Attack. Our upcoming 4X game is heavily influenced by both Civilization and SimCity.
Anyway, I feel like the only way to really make a long-term mark on the industry as a whole is to make games that inspire future games that inspire future games. Fingers crossed.